
/**
 * 金额格式化
 */
export function MoneyFilter (value) {
  if (value != null) {
    let html, _val
    value = Number(value).toFixed(2)
    if (value === 0) {
      value = 0
      html = '¥ 0.00'
      return html
    } else if (value.split('.')[1].substring(1) === 0) {
      value = Number(value).toFixed(2)
    }
    _val = value.split('.')
    var pattern = /(?=((?!\b)\d{3})+$)/g
    _val[0] = _val[0].replace(pattern, ',')
    html = '¥ ' + _val[0] + '.' + _val[1]
    return html
  }
}

/**
 * 百分比格式化
 */
export function RateFilter (value) {
  if (value != null) {
    var html, _val
    value = Number(value).toFixed(2)
    if (value === 0) {
      value = 0
      html = '0.00'
      return html
    } else if (value.split('.')[1].substring(1) === 0) {
      value = Number(value).toFixed(2)
    }
    _val = value.split('.')
    html = _val[0] + '.' + _val[1]
    return html
  } else {
    html = '0.00'
    return html
  }
}

/**
 * 金额大写格式化
 */
export function MoneyUppercaseFilter (n) {
  var fraction = ['角', '分']
  var digit = [
    '零', '壹', '贰', '叁', '肆',
    '伍', '陆', '柒', '捌', '玖'
  ]
  var unit = [
    ['元', '万', '亿'],
    ['', '拾', '佰', '仟']
  ]
  var head = n < 0 ? '欠' : ''
  n = Math.abs(n)
  var s = ''
  for (let i = 0; i < fraction.length; i++) {
    s += (digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]).replace(/零./, '')
  }
  s = s || '整'
  n = Math.floor(n)
  for (let i = 0; i < unit[0].length && n > 0; i++) {
    var p = ''
    for (var j = 0; j < unit[1].length && n > 0; j++) {
      p = digit[n % 10] + unit[1][j] + p
      n = Math.floor(n / 10)
    }
    s = p.replace(/(零.)*零$/, '').replace(/^$/, '零') + unit[0][i] + s
  }
  return head + s.replace(/(零.)*零元/, '元')
    .replace(/(零.)+/g, '零')
    .replace(/^整$/, '零元整')
}
